Question

I have a script to check validation through mysql db, i use jquery to post and call back a result, if validate success will redirect to another url, else will pop up a reminder alert.

function chkValid(){
$.post('check_validate.php', $("#form").serialize(), function(data) {

    // if invalid, pop up alert 
    alert(data);

    // if valid, redirect
    window.location("url");

});

could it be done by the scripts above?

Thanks.
}

Answer 1

you must get what the “check_validate.php” returns to you that was processed in the server side.

your “check_validate.php” must echo a message… for example

<?php
//check_validate.php
if($_POST["req"]=="iamnew"){
        echo "welcome";
}
else{
echo "unwelcome";
}
?>

and let the Jquery process the echo string of your check_validate.php

$.post('check_validate.php',{ req: "iamnew" }, $("#form").serialize(), function(data) {
    if(data=="unwelcome"){
    alert(data);
}
else if(data=="welcome"){
    window.location("url");
}
});